[Graaf_Autowerks]

Originally Posted by TedW

My 2021 ZTK packaged car is on it's way from Germany and arriving in January. Sales Agent and Service Manager at Knauz BMW in Lake Bluff IL say that it should have the bigger brakes. I will confirm when it arrives and post pictures. They also say that the 18in m796 wheels will fit the bigger brakes but other 18in wheels won't. I've attached a photo of my quote for 18in m796 wheels and snow tires.

I also have the Dinan exhaust coming (don't care for the std. trapezoid tips). Will post on that when it comes. https://www.dinancars.com/products/e.../D660-0085-BLK

Lastly, hello all. This Forum is really helpful.

My '21 on 796M with ZTK is tight fit as pictured previously in thread, but can confirm you're good to go. Glad you find the forums useful! Try to not go crazy during the delivery wait, you'll be happy when she arrives!

[berkel]

Thanks guys, I was going to order winter tires, but I'd rather get a wheel tire package for $2400, esp OEM and 18s to be more forgiving.

[skw]

Originally Posted by ///Medge

Ya, I agree. I wonder if the car is leased if the dealer will buy back the wheels at the end of the term (if they don't fit the next leased car).

Highly doubt it. What are they going to do w/ used wheels and tires? Not to mention that at the end of a lease, the vehicle is going back to BMWFS (unless the dealer gets a good offer to buy it from them and decides to do so).

[obscurehero]

FYI. Here's the car I took delivery of with 796Ms with the ZTK package. Obviously not the front, but you can see it fits fine.

[josehb]

Originally Posted by ///Medge

I heard back from a local dealer sales associate. His feedback, after checking with several folks at bmw corporate and regional producers experts, was that the ZTK comes with larger rotors but the calipers are the same.

Just another data point!

You mean the number of pistons which are 4 pistons are the same, the calipers are definitely much larger.

[Benjamin_Nicholas]

Originally Posted by ///Medge

I heard back from a local dealer sales associate. His feedback, after checking with several folks at bmw corporate and regional producers experts, was that the ZTK comes with larger rotors but the calipers are the same.

Just another data point!

Never trust the sales dept. If it doesn't come from the foreman in the shop, it's likely bull$hit.

The rotors are bigger, as are the calipers.

[BlueLeaderXI]

I love the Blue calipers. Didn't get the Tire & Cooling PKG as I didn't know that it came with bigger Blue M brake calipers/rotors (374mm). ugh. oh well.

Just throwing this out there if anyone has the Tire & Cooling PKG but likes the larger Red calipers/CD/S rotors, WTB or trade: I can buy the Red M-Performance big brake kit (accessory) and will give you the Red calipers w/ cross-drilled slotted rotors (same dimensions as the larger Blue M brakes that come in the Tire & Cooling PKG), in exchange for the larger Blue calipers/solid rotors.

Thanks, PM me if interested to change your Blue to Red !

[larrylam646]

BlueLeaderXI,

Why not purchase the front 374mm rotors, calipers, pads and wear sensor?

Less money and less work to install.

Larry

[BlueLeaderXI]

Originally Posted by larrylam646

BlueLeaderXI,

Why not purchase the front 374mm rotors, calipers, pads and wear sensor?

Less money and less work to install.

Larry

Also a great idea Larry thanks! I guess I was under the impression from when I went to upgrade my F30 335xi from stock (w/ the grey 4 piston unmarked brembos) to M-Sport blue system (4pot front/2pot rear) I kept being told I couldn't order those like replacement parts, and nowhere online seemed to be selling them. So I ordered the M Performance that came with the calipers/CD/S rotors and all mounting hardware, and swapped calipers/rotors with my dad's M Sport 440xi.

I well might go with your idea, seems much easier less convoluted. Especially since rear brakes I believe are the same?

What about all the tiny pieces of hardware/mounting/brackets?

Or is all I need is part #'s for the front Blue calipers + 374mm rotors + pads + sensors? That would be a lot easier. I haven't seen any part numbers for these and don't know if it would be much different in price as my understanding was the larger calipers/rotors would still be up there, looks like the M Perf Red brake kit is 2.3-2.5k.?

Thanks and sorry for the questions.

[larrylam646]

Originally Posted by BlueLeaderXI

I well might go with your idea, seems much easier less convoluted. Especially since rear brakes I believe are the same?

What about all the tiny pieces of hardware/mounting/brackets?

Or is all I need is part #'s for the front Blue calipers + 374mm rotors + pads + sensors? That would be a lot easier. I haven't seen any part numbers for these and don't know if it would be much different in price as my understanding was the larger calipers/rotors would still be up there, looks like the M Perf Red brake kit is 2.3-2.5k.?

Thanks and sorry for the questions.

Yes, the rear brake setup is the same, only with blue calipers and flat rotors.

Yes, all you really need are the L/R 374mm rotors, L/R 374mm calipers, brake pads and wear sensor. Reference for the part #s (Diagram Part #s 3, 5, 1, 2) - https://bimmercat.com/bmw/en/search/.../USA/34_2744.\

Technically, you should replace the caliper mounting bolts (diagram part# 11) since I believe they are single use, but I just reused my existing bolts.

Larry

[TiMSport]

I'm sorry for asking probably the same question that had been asked multiple times in this thread but just want to make sure. I recently ordered an M340i xDrive with the ZTK setup. The ONLY difference with respect to the brakes is that the rotors are larger, correct? If so, that is for front rotor only, correct? Thank you!

[Burrcold]

Originally Posted by TiMSport

I'm sorry for asking probably the same question that had been asked multiple times in this thread but just want to make sure. I recently ordered an M340i xDrive with the ZTK setup. The ONLY difference with respect to the brakes is that the rotors are larger, correct? If so, that is for front rotor only, correct? Thank you!

Rears are the same. The caliper bodies are bigger up front as well.

[TiMSport]

Originally Posted by Burrcold

Rears are the same. The caliper bodies are bigger up front as well.

Thanks! The caliper "body" is larger but it's still a 4 piston brake?

[Burrcold]

Originally Posted by TiMSport

Thanks! The caliper "body" is larger but it's still a 4 piston brake?

Correct.

[Vmaxx]

We just had snow here in South Texas, which is extremely rare, but man it just reminds you how important having the correct tires is and the P4S setup ain’t it, even for just a couple inches of snow.

[TiMSport]

Just saw in the news you guys are getting hammered over there in TX. Stay safe!

[NorCalAthlete]

Originally Posted by Vmaxx

We just had snow here in South Texas, which is extremely rare, but man it just reminds you how important having the correct tires is and the P4S setup ain’t it, even for just a couple inches of snow.

Yeah man, I feel ya. It rained for like 8 hours last night and I woke up to wet pavement this morning. Freezing cold like 55* outside too. Had to turn on the butt warmers when I went to grab brunch.

[TiMSport]

LOL. Must be rough getting all the way down to 55 degrees.

[Vmaxx]

Originally Posted by TiMSport

LOL. Must be rough getting all the way down to 55 degrees.

Lol right. Windchill was -10 here and that’s unheard of for south Texas. In fresh powder the P4S was acceptable but anything that was compacted or refrozen was down right bad. Braking was non-existent, so in other words, don’t be on the road without the proper tires. I can’t wait for Texas to return to normal temperatures.

[Benjamin_Nicholas]

Originally Posted by Vmaxx

We just had snow here in South Texas, which is extremely rare, but man it just reminds you how important having the correct tires is and the P4S setup ain’t it, even for just a couple inches of snow.

Yeah, it happens in TX like every 10-15 years.

That's not enough for me to switch to winter tires.

It's just more reason to own more than one vehicle for more than one weather situation.

South Texas will return to 70 degrees by the weekend.

[TiMSport]

Originally Posted by Benjamin_Nicholas

Yeah, it happens in TX like every 10-15 years.

That's not enough for me to switch to winter tires.

It's just more reason to own more than one vehicle for more than one weather situation.

South Texas will return to 70 degrees by the weekend.

Yeah but who knows? The frequency of crazy weather like that may occur more often the way things have been shaping up over the past few years. It's actually not only TX experiencing unusual weather patterns as of late.

[Vmaxx]

Originally Posted by TiMSport

Yeah but who knows? The frequency of crazy weather like that may occur more often the way things have been shaping up over the past few years. It's actually not only TX experiencing unusual weather patterns as of late.

Exactly. I think these occurrences will become more frequent. Like Ben mentioned, probably still not a reason to buy and store winter tires in south Texas, but enough to prepare in some way shape or form.